http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55006
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2012-10-21 12:24:23 UTC --- Created attachment 28499 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28499 Compressed archive for aermod The attachment contains the files needed to compile and run the test aermod. The original source has been split in aermod_red.f90, wake_dfsn.f90, and wake_dfsn2.f90 (the two subroutines that are miscompiled). It can be used as gfc -c -m64 -O2 -funroll-loops aermod_red.f90 wake_dfsn.f90 wake_dfsn2.f90 gfc aermod_red.o wake_dfsn.o wake_dfsn2.o where gfc is gfortran at revision 192526 or later. This gives the miscompiled code. If the files wake_dfsn.f90 and wake_dfsn2.f90 are then compiled with revision 192525 or older (and same options), then the new executable is OK.